James arthur reaveil



J. A. REAVELL.

APPARATUS FOR HEATING LIQUIDS.

APPLICATION FILED SEPT. 26. 1918.

'1 ,3 1 7, 3909 Patented Sept. 30, 1919.

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Tm: COLUMBIA PLANOGRAPH 60., WASHINGTON, n. c.

UNITED sTATEs PATENT OFFICE.

JAMES ARTHUR BEAVELL, or BEGKENHAM, ENGLAND.

APPARATUS FOR HEATING LIQUIDS.

To all whom it may concern:

Be it known that 1, JAMES ARTHUR REAVELL, subject of the King of Great Britain, residing at 28 Oakwood avenue, Beckenham, in the county of Kent, England, have invented new and useful Improvements in Apparatus for Heating Liquids, of which the following is a' specification.

This invention has reference to apparatus fOr heating liquids by the application of the principle of emulsifying the liquid by its own vapor produced by heating and relates solely to that type of the apparatus in which the evaporator consists of a horizontal coil or coils. The object of the present invention is to overcome certain difficulties caused by the condensation of the steam water logging some of the elements through which the steam has to pass.

In the type of apparatus to which this invention refers the great advantage obtained is the perfect distribution of the liquor in the tubes and consequent high rate of evaporation, due not only to the film action but to the counter-current action of the steam and the liquor.

The steam enters in the annular space at the top element. The liquor enters the internal tube or tubes from the bottom element. The steam passes out as distilled water from the annular space in the bottom element; the liquor passes out of the top element as vapor and concentrated liquor.

In practice, however, it is found that the bottom element and sometimes the bottom two elements become water-logged, as all steam condensed in the tubes has to pass along with the uncondensed steam, and not only is the heating surface reduced and the efficiency lowered, but considerable water hammer takes place. This water hammer interferes with the film action and is also frequently so severe as to start the joints.

Now in order to overcome these difficulties I arrange to drain the condensed steam from each element, or certain of the elements so that any steam that is condensed on the tube is withdrawn at the end of the tube and does not pass as water into the second tube and this is accomplished by forming pockets in the castings, which pockets drain into one common connection coupled to a steam trap. Or the connection may be emptied by means of a valve regulated by hand or otherwise.

Specification of Letters Patent.

-Patented. Sept. 30, 1919.

Applicationfiled September 26, 1918. Serial No. 255,789.

The invention is illustrated on the accompanying drawing.

Fig. 1 is a part sectional elevation showing each internal liquor tube surrounded by a jacket Or outer tube with the draining pocket and connection.

Fig. 2 is a similar view showing two internal liquor tubes in each jacket or outer tube with the draining pocket and connection.

Fig. 3 is a sectional elevation taken through the line 3-3 of Fig. 1.

Referring to Figs. 1 and 3 A represents the outer tubes or jackets and B the inner tubes. Steam enters in the annular space formed by the tube B through the inlet a at the top element of the evaporator, and the liquor to be treated enters the tube B from a container or tank through the inlet 6 of the bottom element. The liquor flows from this bottom element to the next element and so on until it reaches the topmost element from whence it flows upward by way of pipe 72 and passes out as vapor and concentrated liquor into a receiver or back again to the container according to the particular treatment desired. As the steam passes along the annular space in the topmost element any condensation that takes place instead of passing along with the steam into the neXt element flows as distilled water into the pocket a and from this pocket by way of the outlet a down the common connection a into a steam trap coupled to the end of this connection, or may be drained away by means of a valve regulated by hand or otherwise. Thus any condensation that takes place as the steam passes along from one element to another is collected in the pocket of each element provided with a pocket and passes from thence down the common connection. All the elements may be provided with similar pockets formed integrally in the casings which comprise their end portions, or only some of the elements can have these pockets, and if every other element has a drain pocket, as shown in the drawings, it will be found satisfactory.

At Fig. 2 each element consists of an outer jacket or tube A and two inner liquor tubes B, the outer tube of each element being provided with a pocket a communicating with a common connection so that any steam that is condensed on the tube is withdrawn at the end of the tube as previously come all the difficulties which in this systern it has been found occur in practice throughaterdo'g'ging of any of the 616 inents, consequently the efficiency of the apparatus is enhanced and the rapidity of the process increased.v V i I p 7 7 What I claim as my 111Ve11t1OIIaIldd6S1I6 to secure by Letters} Patent is In a heating apparatus; aseries of outer "tubes for steam, castings connecting the end portions ofthe steam tubes and provided with steam passages, said castings being'also provided With integrally formed pockets for the Water of condensation to drain into, a drain pipe connected to the said pockets, and pipes for the liquid to be heated extending through the steam tubes and their end o'astings, 1 1

Intestimony whereof I have signed my name to this specification inthe presence of tWo subscribingwitnesses.

JAMES ARTHURREAVELL.

Witnesses: l i

HLWQDoN O L HA Y, GEORGE ISAAC BRIDGES.

. Copies of this patent maybe obtained for five cents each, by addressing the "Commissioner of Patents.

. 7 Washington, D. 0 

